Abstract: One exemplary embodiment includes a method that calls for supporting an insert in a mold cavity of a casting die by way of one or more spacers, introducing a molten material into the mold cavity such that the one or more spacers are melted and consumed by the molten material, and wherein the one or more spacers and the molten material are of the same composition.

Abstract: A method for manufacturing an aluminum alloy rod head, wherein an aluminum alloy material is placed in molds of a panel, an upper cover, and a bottom plate; and then the molds are mold-cast to be formed as casings. The inner surfaces of the casings are installed with transversal enhancing bodies and longitudinal enhancing bodies. Therefore, the weight can be controlled easily and the ratio of the thickness thereof is also controlled easily. Moreover, the mold can be removed conveniently. Then, the connections of the casings are welded to be formed as a super large (above 330CC) rod head.

Abstract: A process of making a vane for a rotary expansible chamber device, comprising the steps of: providing an open vane die having a die cavity, wherein said die cavity comprises a body cavity section corresponding to a body of the vane, a first tip cavity section corresponding to a first tip of the vane, and a second tip cavity section corresponding to a second tip of the vane; providing a preheated, porous carbon preform in the first tip cavity section of the vane die, the preform having a shape corresponding to at least a portion of the first tip cavity section; closing the vane die; injecting a castable admixture comprising a metal alloy and a plurality of inorganic particles into the die cavity and filling the vane die cavity with the injected admixture; impregnating the preform with the metal alloy of the injected admixture, substantially all of the inorganic particles from the injected admixture being filtered out by the preform as the admixture flows into the preform; allowing the castable admixture to sol

Abstract: A net shaped ceramic-reinforced aluminum matrix composite is produced by forming a permeable mass of ceramic material with a defined surface boundary having a barrier, and contacting a molten aluminum-magnesium alloy with the permeable mass of ceramic material in the presence of a gas comprising from about 10 to 100% nitrogen, by volume, balance nonoxidizing gas, e.g. hydrogen or argon. Under these conditions, the molten alloy spontaneously infiltrates the ceramic mass under normal atmospheric pressures until it reaches the barrier. A solid body of the alloy can be placed adjacent to a permeable bedding of ceramic material having a barrier, and brought to the molten state, preferably to at least about 700.degree. C., in order to form the net shape aluminum matrix composite by spontaneous infiltration. In addition to magnesium, auxiliary alloying elements may be employed with aluminum. The resulting composite products may contain a discontinuous aluminum nitride phase in the aluminum matrix.

Abstract: A process is disclosed for producing discontinuous metal foils. The process involves entraining metal powder particles in a carrier gas and passing the powder particles through a high temperature zone at a temperature above the melting point of the powder particles to melt at least about 50% by weight of the powder particles and thereafter resolidifying the resulting high temperature treated material by impacting the material against a substrate to form the foils.

Abstract: A method of manufacturing a vent element having vent pores extending therethrough in parallel with the axial direction for use in die casting, rubber and plastic molding, metering and supplying of fluids, a ball-point pen and others. The method comprises winding one or more wire rods consisting of metal, ceramics or a compound material thereof having a melting point higher than that of a core rod in the form of a single or plural layer spirally around the core rod to form a secondary wire rod, heating the secondary wire rod or a bundle of a plurality of the secondary wire rods to a temperature which exceeds the melting point of the core rod but does not melt the wire rod so as to melt the core rod, whereby the melt is infiltrated into the interspaces between the wire rods and/or the windings of the wire rod to form one pore at every position where the core rod was.

Abstract: A cooling element for use in metallurgical furnaces, such as blast furnaces, and a method of making the same. The cooling element is composed of a cast-steel body having a surface which in use faces the interior of the respective furnace and which is provided with elements of refractory material. Embedded in the cast-steel body are steel tubes through which cooling medium is to be circulated when the element is in use. Embedded between the respective tubes are heat-absorbing members which are preferably of the same or an analogous material as the cast-steel body itself and which have the purpose of absorbing the temperature differential between the liquidous point of the steel melt and the superheated temperature at which the melt is cast.

Abstract: Maximum yield in the production of a slab from a bottle-cap mold ingot is obtained by a method of selecting the ingot mold size.

Abstract: Maximum yield in the production of a slab from an open-top or hot-top mold ingot is obtained by a method of selecting the ingot mold size and the pour height in the mold.